Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a535bc64e50e947a666b5d5aaae996786dfb454154f8488cee45244cf80444ce' 
  AND token = '1L+8t2wPjeW5XA/HcDD4JFl9ngH+BLEmL46SPju7RZ0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}